Air-pressure-creating device for gasolene-supply to engines, &amp;c.



"TURKEY! w. P. HERBERT.

APPLIDATION FILED MAR. 24, 1911.

Patented Apr. 16, 1912.

AIR PRESSURE CREATING DEVICE FOR. GASOLENE SUPPLY TO ENGINES, 6w.

WILLIAM P. HERBERT OF PHILADELPHIA, PENNSYLVANIA.

AIR-PRESSURE-CREATING DEVICE FOR GASOLENE-SUPPLY TO ENGINES, 8w.

Specification of Letters Patent.

Application filed March 24, 1911. Serial No. 616,594. i

To a]? QU/LOTIL it may concern:

Be itv known that I, lYILLiAu P. HERBERT, a citizen of the UnitedStates, residing in the city and county of Philadelphia, State ofPennsylvania, have invented a new and useful Air-Pressurelreoting Devicefor (lasolendSupply to Engines, 620., of which the following is a spccii -ation.

My invention consist;- of a novel construction of an air pressure tseating device which is adapted to be tllltOlIlntlCflllY operated by asuitable element of the valve operating: mechanism of a hydrocarbonexplosive engine, which may be of the character employed on motorvehicles or the like, provision being made for conducting the air underpressure to the gasolene supply tank, whereby the gasolene underpressure is caused to flow to the carburetor in a regular anduninterrupted manner, without necessitating any attention on the part ofthe operator.

To the above ends my invention consists of a novel construction of airpump whose piston rod and piston are located in the line of the enginevalve mechanism, said piston being recessed at its lower portion andhaving a roller therein adapted to be operated in one direct ion by acam of the valve mechanism and in the opposite d rection by a suitabletension device also forming a part of the valve mechanism. said pistonhaving a valve therein adapted to control the flow of air to the pistonchamber and its adjuncts.

It further consists of novel means for pro venting rotation of thepumping piston and its adjuncts.

It further consists of other novel features of construction, all as willbe hereinafter fully set forth.

Figure 1 represents a side elevatiompartly in section, of a novelconstruction of an air pressure creating device and its adjuncts cmbodving my invention. Fig.9 represents on an enlarged scale, a longitudinalsectional view of the pumping apparatus employed.

Fig. 3 represents a section on line :r-a: Fig. 2. Fig. 4 represents apartial section on line Fig. .2, showing the position of the valveemployed.

Similar numerals of reference indicate corresponding parts in thefigures.

Referring to the drawings :---For the pur pose of illustrating myinvention, I have shown in the accompanying drawings one form thereofwhich is at present preferred by me since the same has been found inpractice to give satisfactory and reliable results, although it is to heunderstood that the various instrumentalities of'Which-iny inventionconsists can be variously arranged and organized and that my inventionis not limited to the precise arrangement and organization of these.instruinentalities as herein shown and described.

In the practical embodiment of my invention, I convert a suitableportion of the valve operating mechanism into a novel and etlicientpumping apparatus, whereby I am enabled to utilize the reciprocatingniovement of the valve operating mechanism to impart the necessaryreciprocations to the pumping inen'iber without increasing the number ofparts to elfect the operation of the pumping member. 1 designating thecylinder or easing of a hydrocarbon explosive engine used on motorvehicles, and 2 the valve which regulates the-passage of the gasesthrough the opening 3,-said valve being held normally to its seat by aspring st bearing against the casing or a portionthereof, and againstthe washer 5 secured to the valve rod (3, the lower end of the latterrest ing in the seat T, of the threaded stem 8. which)JtlSsP'iilll'OtlQll the dust guard 9, and

is in threaded or other engagement with the top of the rod 10. said stem8 being secured in position by the nut. it, the forcgoiugparts being ofthe usual construction and requii'ing no further description.

12 designates the pump cylinder. the up per extension to of the .iamcserving as a guide for the rod it), to the lower end of which is securedthe piston 14, which reciprocntcs in the piston chamber 1.3. The lowerend of the piston 14 has a recess H1 therein. in which is rotatabtvmounted the roller 17, said roller turning freely on its hearing or pin19, the ends of the latter bein extended and squared to form the tongues1H which ride freely in the grooves or ways 2'! located in the innerperiphery of the piston casing I2.

21 designates a port leading upwardly from the re ess lt'i into thevalve chamber .22 (best: seen in Fig. 4), said valve chamber be inglocated in the piston 14 and being open at its top into the pistonchamber 15. said valve chamb r containing the valve 23 wh ch may be aball valve as in the present in- Patented Apr. 16, 1912.

stance, or other form of valve if desired, said valve being held inposition by the pin 24.

Referring now to Fig. 1, designates a rotatable shaft' having thereonthe cam 26 which contacts with the roller 17, so that it will be seenthat each rotation of said shaft and cam will cause an upward movementto be imparted to the piston 14, whereby the air in the iston chamber 15will be compressed an forced through the outlet port check valve 27 intothe discharge pipe 28 past thesafety valve 29 and thence into thegasolene tank 30, the pressure of air in the gasolene tank causing thegasolene to flow through the outlet pipe 31 into the carbureter (notshown), the amount of air pressure in the gasolene tank being indicatedby the gage 32 connected to the gasolene tank by the pipe 33. The pistonit is caused to move downwardly after the upward movement thereof causedby the cam 26, by the tension of the spring 4, so that during eachrotation of the shaft 25 there is an upward and downward movementimparted to the piston 14, and the ingress of air will be controlled bythe valve 23 of the piston 14, as will be apparent from Fig. l, so thatthe necessary air pressure upon the gasolene in the gasolene tank willbe always maintained automatically without requiring any attention uponthe part of the operator ol'1hoan toniobile or engine, which latter maybe of any approved form either stationary or adapted for automobile,arroplanior other uses.

There have been various (lQVlt't'S proposed for creating or cansing'anair pressure upon the gasolcnc of the gasolene supply tank of anautomobilcor hydrocarbon engine, most of which have to be operatedmanually or Y b mechanical means rci ulriiw attention of the operator,but my pres nt invention dil fcrs therefrom, since I ulihm: a movableelc ment of the valve nu-chanism to cllcct the pumping operation and amihus enabled to obtain at all times during the operation of the enginethe ncccssar air pressure to force the gasolcuc to the rarluirolcr. Theaction of the safety \alvc 25' and the pump valve 23 will be apparent tothose skilled in the art, and it will be apparent that the roller 17will be hchl at all times in proper position with re pect to its cam 20by means of the tongues 19 and the ways 20 tlltN'l Ul, the dust guard 9preventing the iugr of dust to the piston chamber 1;) and the spring lperforming its dual function of etfecting the proper actuation of thevalve 2 and the piston 14: and its adjuncts.

My novel device can be cheaply manufactured and does not readily get outof order, and after being once assembled requires no packing,adjustment, or other attention, as is evident.

It will now be apparent that I have devised a novel and usefulconstruction of an air pressure creating device for gasolene supply toengines, etc. which embodies the features of advantage enumerated asdesirable in the statement of the invention and the above description,and while I have, in the present instance, shown and described apreferred embodiment thereof which has been found in practice to givesatisfactory and reliable results, it is to be understood that the sameis susceptible of modification in various particulars without departingfrom the spirit or scope of the invention or sacrificing any of itsadvantages.

Having thus described my invention What I claim as new and desire tosecure by Letters Patent, is:-

l. in a device of the character stated, a cylinder having one end openand provided with a valved outlet at its other end and formed withdiametrically opposite guidegroou-s in its bore, a piston reeiprocablein said cylinder and formed with a recess in its outer end having avalved opening into the closed end of the cylinder, a pin transverselysecured through the recessed portion of the piston and having projectingends guided in the grooves of the cylinder, a roller journalcd upon saidpin within the recess, and a rotary cam engaging such roller.

2. in a device of the character stated, a cylinder having one end open'and formed with a guide-extension at its other end, an outlet valve insaid latter end, a'piston in said cylinder and formed with a recess in'its end and a rod at its other end movable in the guide-extcnsiom meansfor retaining said piston against rotation, a 'valve in said pistoncontrolling e onununication bcl\\'('l!l the recess in the same and theinterior of the l'yllllll 'l', a roller journaled in I the recess of thepiston, and a rotary cam engaging .\ll('ll roller.

Wl lililAM l. HERBERT.

W it misses:

ll. .\l. (lnoss, Nmimn Merriam-Jr.

